Improvement in windows



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Letters Patent No. 90,396, dated May 25, 1869.

The Schedule referred to .in these Letters Patent and making part of the same.

To all whom it may concern Beit known that I, GIDEON A. RUSSELL, of Chicago, in the county lof (look, and State of Illinois, have invented'a new and useful Improvement in Windows;

and I do hereby declare and make known that the fol-- lowing is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and the letters and gures marked thereon, which form part of this specification.

My invention consists in applying to the sides and bottom of the lower sash, and the sides and top of the upper sash, a thin metallic strip, which projects into and slides in suitable and appropriate grooves in the sides and top ofthe window-frame, and its closely against the ledge of the window-frame, at the bottom, thus forming a tight joint, and excluding the wind, cold, and dust, and at the same' time eifectually preventing all rattling and jarring ofthe sash.

My said improvement further consists in attaching to the top of the lower sash an adjustable strip, which may be moved out against the lower member of the upper sash, or withdrawn, to adapt the same to the shrinking or swelling of the wood, so that a close joint may always be formed between the top of the lower sash and the bottom ofthe upper sash, as hereinafter described.

To enable those skilled in the art to understand how to construct and use my invention, I will describe the same with particnlarity, making reference, `in so doing, to the aforesaid drawings, in which- Figure l represents a front elevation of my invention; l

Figure 2 is a longitudinal section thereof, at the vertical line in iig. l; and

Figure 3 is a cross-section, at the horizontal line in tig. 1.

Similar letters of reference in the several figures denote the same parts of my invention.

D represents the window-frame, S the sill, and A B the lower and upper sections of the sash.

Upon the face of the sash are secured, by means of screws passing through slots, as shown, metallic strips, marked, respectively, a', l), and d, the latter, however', in no case to be secured by slots, unless desired.

The strips a l) are inserted in and move in the grooves e c, made in the sides of the window-trames, said slotted attachments being for the purpose of allowing the strips c b to be withdrawn from the grooves, by simply loosening the screws, when it is desired to take out the sash, but the same effect may be attained without the slots, as in that case the screws can be entirely withdrawn, but I consider the slotted arrangement, above described, and shown in the drawings, to be the better and more convenient mode.

Upon the sill S, a strip, E, is secured upon'which the lower member of the sash rests, so that-the strip d, upon the lower edge of the lower sash, tits closely down against the same, as clearly shown iu fig. 2, forming a close joint, as desired.

'By this mode of arranging or securing the sashuin the frames, the sash may alwaysbe made loose enoughV to prevent any possibility' of the swelling of the wood, making the sash bind, so as not to be easily moved up and down, while at the same time a perfect and tightfitting joint, excluding cold, wind, dust, or rain is made,

and the sash prevented from rattling or jarring.

The grooves e e, in which the strips a ll slide, may I'it closely to the strips, all danger of the swelling of the woods binding the strips being obviated by having the groove made in a large single piece of wood, so that the Aexpansion of the frame tends -to open the groove as much as it tends to force the sides thereof' together by the local expansion adjacent thereto.

Between the two members of the sash, the ordinary strip or stop'c is arranged, as shown, extending to the top of the lower sash only.

lo'close the joint or opening between the lower end of the upper sash and the upper end ofthe lower sash, I arrange upon the top of the lower sash a movable bar, O, which lnoves towards or from the upper sash, said adjustment being effected by securing the strip c upon the sash A, bypassing screws s through slots in O.

By this arrangement the bar G may always be kept close against the upper sash, to make a tight joint,

'adjusting the same to the shrinking or swelling ofthe sash.

By the use of the metallic strips, a much less amount of friction is occasioned in moving the. sash, from the fact that there is less friction-surface and that there is a less amount of friction arising from the sliding of ametallic surface upon wood than from the sliding of two wood surfaces upon each other.

Having described the construction and operation of my invention, I will now specifywhat I claim, aud

desire to secure by Letters Patent.

1. I claim the combination of the strips ct b upon window-sash, to operate within the grooves e, in the manner and for the purposes set forth.

2. I claim the arrangement of the strips d upon the lower sash, in the manner and for the purposes described.

, 3. I claim the arrangement of the movable strip c, in combination with the sash A, to operate in the manner speciied.

Witnesses: G. A. RUSSELL.

W. E. Manns, H. BRnNs. 

